SL/R230: OPTICAL DECODER & BYPASS LOOPS
Thread Starter
Senior Member
Joined: Oct 2021
Posts: 493
Likes: 101
From: Benton, Louisiana, USA
SL 500 2004, Ford F-150-2014
OPTICAL DECODER & BYPASS LOOPS
GUYS AND GALS,
I HAVE DECIDED TO BITE THE BULLET AND REPLACE THE OLD COMMAND 2.0 WITH AN ANDROID SYSTEM. HAVE MOST OF THE INFO, BUT WOULD LIKE TO KNOW:
1.-HOW MANY LOOPS DO I NEED. MALES OR FEMALES?
2.-I ASSUME I HAVE 3 ITEM S IN THE LOOP, THE COMMAND, THE CD AND THE TELEMATIC. WONDER WHERE THE TELEMATIC IS LOCATED.
3.-DOES ANYONE HAVE AN OPTICAL LOOP SCHEMATIC?
THANKS AGAIN FOR YOUR SUPPORT!
I HAVE DECIDED TO BITE THE BULLET AND REPLACE THE OLD COMMAND 2.0 WITH AN ANDROID SYSTEM. HAVE MOST OF THE INFO, BUT WOULD LIKE TO KNOW:
1.-HOW MANY LOOPS DO I NEED. MALES OR FEMALES?
2.-I ASSUME I HAVE 3 ITEM S IN THE LOOP, THE COMMAND, THE CD AND THE TELEMATIC. WONDER WHERE THE TELEMATIC IS LOCATED.
3.-DOES ANYONE HAVE AN OPTICAL LOOP SCHEMATIC?
THANKS AGAIN FOR YOUR SUPPORT!
Senior Member
Joined: Apr 2007
Posts: 436
Likes: 79
Former R230, W220 and W221 owner
GUYS AND GALS,
I HAVE DECIDED TO BITE THE BULLET AND REPLACE THE OLD COMMAND 2.0 WITH AN ANDROID SYSTEM. HAVE MOST OF THE INFO, BUT WOULD LIKE TO KNOW:
1.-HOW MANY LOOPS DO I NEED. MALES OR FEMALES?
2.-I ASSUME I HAVE 3 ITEM S IN THE LOOP, THE COMMAND, THE CD AND THE TELEMATIC. WONDER WHERE THE TELEMATIC IS LOCATED.
3.-DOES ANYONE HAVE AN OPTICAL LOOP SCHEMATIC?
THANKS AGAIN FOR YOUR SUPPORT!
I HAVE DECIDED TO BITE THE BULLET AND REPLACE THE OLD COMMAND 2.0 WITH AN ANDROID SYSTEM. HAVE MOST OF THE INFO, BUT WOULD LIKE TO KNOW:
1.-HOW MANY LOOPS DO I NEED. MALES OR FEMALES?
2.-I ASSUME I HAVE 3 ITEM S IN THE LOOP, THE COMMAND, THE CD AND THE TELEMATIC. WONDER WHERE THE TELEMATIC IS LOCATED.
3.-DOES ANYONE HAVE AN OPTICAL LOOP SCHEMATIC?
THANKS AGAIN FOR YOUR SUPPORT!
See if this helps. He installs an aftermarket on a R230
and this
Last edited by imtheking; Mar 31, 2026 at 07:53 AM.
Senior Member
Joined: Nov 2021
Posts: 471
Likes: 119
From: North West England
SL500
You need to know if you have MOST or D2B fibre system.I presume by age it is D2B.
Are you going to keep the original amplifier?
If all the other components on the fiber are OK then you can just leave them connected and will be fine. However if you read about the D2B system, it can be awkward, and some people find they need to connect the D2B adapter direct to the amplifier with a singe fibre cable (loop).
Another option is to remove the D2B completely, and wire the new headunit either to a new amplifier, or directly to the speaker cables after removing the original amplifier behind driver/passenger seat.
You only need "loops" if you are removing components from the fiber system to "fill in the gap" of the missing component in the fiber loop.
Are you going to keep the original amplifier?
If all the other components on the fiber are OK then you can just leave them connected and will be fine. However if you read about the D2B system, it can be awkward, and some people find they need to connect the D2B adapter direct to the amplifier with a singe fibre cable (loop).
Another option is to remove the D2B completely, and wire the new headunit either to a new amplifier, or directly to the speaker cables after removing the original amplifier behind driver/passenger seat.
You only need "loops" if you are removing components from the fiber system to "fill in the gap" of the missing component in the fiber loop.
Newbie
Joined: Jul 2011
Posts: 7
Likes: 1
2007 SL600
Based on your profile you have a 2004 SL500, right?
That means most likely not a MOST fiber connection, you will need D2B fiber converter and you will need to follow the Seicane install video shared earlier as you will most likely also require a 6M cable run from dash to rear CD changer area.
D2B adapter
That means most likely not a MOST fiber connection, you will need D2B fiber converter and you will need to follow the Seicane install video shared earlier as you will most likely also require a 6M cable run from dash to rear CD changer area.
D2B adapter
Last edited by bnastyer; Apr 4, 2026 at 08:38 PM.
